Release v0.5.0

🎨 Modern Glass UI Redesign

• Complete UI overhaul with modern Glass UI design featuring backdrop blur and transparency effects
• New top navigation bar with professional tabbed interface for all views (Chat, Modes, History, MCP, Marketplace, Cloud, Settings)
• Moved Modes from modal overlay to integrated tab in the top navigation bar
• Smooth animations and transitions between tabs with fade-in effects
• Enhanced visual hierarchy with gradient backgrounds and glass morphism effects
• Improved accessibility with focus states and semantic markup
• Responsive design that works across different screen sizes

🔧 Technical Improvements

• Refactored component architecture for better maintainability
• Optimized re-renders and performance improvements
• Updated CSS with modern styling and glass UI effects
• Fixed TypeScript compilation errors and improved type safety
• Enhanced test coverage and component reliability